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sed or operator

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# 1  
Old 10-15-2010
Bug sed or operator
hi,

I got a requirement to change existing script like below to search additional pattern "DB select". i tried using \| opearator but it is not working Smilie. Below is the existing code
Code:
echo $(cat ${1} |sed -n '/Error  in/ {
        N
        N
        N
        /Too many/ {
          p
          }
        }' >>${tmpfile})

I need to search "Too many" or "DB select"

Can some one help in this?

Below is the code i tried executing
Code:
echo $(cat ${1} |sed -n '/Error  in/ {
        N
        N
        N
        /Too many\|DB select/ {
          p
          }
        }' >>${tmpfile})

Regards,
Jairam
Last edited by vbe; 10-15-2010 at 12:31 PM.. Reason: Code tags please
# 2  
Old 10-15-2010
You can come at it negatively:

/regex1/!d
/regex2/!d

where the list can have any length, and you you can d, b or "b target_tag" to each as is appropriate. Anything else falls through.

BTW, beware some sed have a bug that drops data for N at $=EOF. You can sometimes just '$!N'.
This User Gave Thanks to DGPickett For This Post:
ctsgnb
# 3  
Old 10-16-2010
Quote:
Originally Posted by DGPickett
BTW, beware some sed have a bug that drops data for N at $=EOF. You can sometimes just '$!N'.
I didn't know that , thx for the tip !
# 4  
Old 10-16-2010
Quote:
Originally Posted by DGPickett
BTW, beware some sed have a bug that drops data for N at $=EOF. You can sometimes just '$!N'.
That's not a bug. That's the intended behavior according to POSIX. Some SED implementations (for example GNU) choose to disregard the fact that N should not print if EOF is reached and behave differently.

See the following for more info:
Reporting Bugs - sed, a stream editor
sed

Regards,
Alister
# 5  
Old 10-16-2010
I thoght that setting the variable POSIXLY_CORRECT to some value fixed that one. Am I wrong?
# 6  
Old 10-16-2010
You are correct, jim.
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